Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net loss	$ (2,628)	$ (838)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization expense	1,210	1,303
Amortization of deferred finance costs	20	25
Stock-based compensation	160	243
Allowance for doubtful accounts	132	211
Deferred income tax benefit	(138)	(552)
Changes in operating assets and liabilities:
Accounts receivable	(377)	1,568
Inventory	(1,569)	111
Prepaid expenses and other assets	(222)	(13)
Accounts payable, accrued expenses and other current liabilities	1,819	(1,656)
Cash paid in excess of rent expense	(100)	(91)
Net cash (used in) provided by operating activities	(1,693)	311
Cash flows from investing activities
Purchase of property and equipment	(295)	(604)
Net cash used in investing activities	(295)	(604)
Cash flows from financing activities
Shares repurchased including vested restricted stock in exchange for withholding taxes		(102)
Net cash used in financing activities		(102)
Net decrease in cash, cash equivalents, and restricted cash	(1,988)	(395)
Cash, cash equivalents, and restricted cash at beginning of period	6,066	5,750
Cash, cash equivalents, and restricted cash at end of period	4,078	5,355
Reconciliation to amounts on consolidated balance sheets:
Cash and cash equivalents	2,969	4,246
Restricted cash	1,109	1,109
Total cash, cash equivalents, and restricted cash	4,078	5,355
Supplemental disclosure of non-cash activities:
Liability for equity-based bonuses	(9)	(68)
Supplemental disclosure of cash flow information:
Cash paid during the period for income taxes	15	17
Cash paid during the period for interest	$ 236	$ 290